brostrom



Aug' 19, 1930. E. o; BROSTROM 1,773,168

CEMENT OR CONCRETE CONSTRUCTION Filed April 18, 1927 WIW,

INVENTOR. www

M /Z W ".Zy/ ATTomvEx/s.v

'45 proper structur Patented Aug. 19, 1930 i ERNEST O. BROSTROM, OE

PATENT OFFICE KANSAS CITY, MIssoURI CEMENT OR CONCRETE CONSTRUCTION Appucaui mea April 18,

kThe present invention Vrelates to improvements in cement and concrete building construction, with particular reference to that type of construction which comprises a vcement-or concrete slab having protruding ribs or Ts acting as T studs or sills forlstrengthening the slab according as it is used as a wall or floor. l

The Vprimary object of the invention is to` 'devise an improved method of construction of this'character in which metal reinforcing is used of a typefsuitable not only for reinforcing to be permanently embedded in the slab or T or sill, but also for serving as the self-sustaining framework which isv erected preliminarily tothe application of the cement vor concrete material, and in this connection serving also, in conjunction with suitably placed backing of insulation or other material, to impart the required shape or form to the integral slab and T structure for which the method is designed.k

In carrying out this purpose, I make use of either wire mesh or expanded metal orj Y equivalent metal network material of a character adapted to be shaped into appropriate contour for reinforcing both the slab and T units, and in the latter connection being possessed of sufficient strength and rigidity to sustain not only its own weight but also that of the superimposed load such as roof and floors, and also the weight of the' concrete and cement material, until this has become permanently hardened and setin the final stage of the construction.

l'lt is also sought to devise a construction in which furring strips may or may not be 'employed as a partof the framework and adaptedito be left in place if desired 'for constitut- 4 ying both nailing grounds and stops to prevent a transmission of moisture from the exteriorV Wall surface ofthe structure.

' Convenient eXpedients are also provided for anchoring the parts'elfectively in their al relation, for securing insulation material in place whenfused, and accomplishing various minor functions in an improved manner, all as will hereinafter more Yfully appear.

i With these general objects in view, the in.

1927. serial No.'1a4,575.

vention will now be described by reference to the accompanying drawing illustrating one form of embodiment and method of carrying my invention into practice, after whichthe several features and combinations deemed to be novel will be particularly ser; forth and claimed.

In the drawing- Figure 1 is a perspective detail View of a portion of a concrete T and slab unit constructed in accordancewiththe present invention; Figure 2 is a plan view of a portion of the metal reinforcing material used in the method of construction followed in Figure 1;

Figure 3 is a similar view of a portion of a modified form 0f said reinforcing material;

Figures 4 and 5 are sectional detail views of the T portions of finished slab units, illustrating modified forms of construction;

Figure 6 is a perspective view. showing a bonding and spacer element used in connection with the reinforcing rods; v

Figures 7 to 9 are perspectiveviews of.

other types of tie or bonding elements here- `inafter referred to; and

`ligure 10 1s a lsectional View similar to the views shown in Figures 4 and 5, but illustrating still another method of arranging or installing the reinforcing material.

Referringnow to the drawing in detail; this illustrates in Figure 1 the reinforcing '-.material for the slab and T structure as composed of expanded metal 10 made up from the sheet material illustrated in Figure 2 and soconstructed as to leave bandsll of uncut metal, botlrat the margins and also along intermediate -lines parallel to said margins. .This is for the purpose of adapting the Vmetal to be shapedup to form intermediate angle corners 12 `between vwhich the expanded metal is used for reinforcing the slab 14, and also the Amarginal angle corners 15,

the expanded metal between said corners 15 and the cornersr 12'being utilized for reinforc-k ing the T or studU 16. Preferably, the metal 10 is made up in strips adapted to extend from the face of one T or stud 16to that of the next adjoining T, thus providingtwo spaced webs of the metal in each T, the adjacent corners 12 being conveniently tied toether in this relation by clips 17 or the like,

igures 1 and 7. Where desired to use furring strips 18 as nailin grounds or the like, these may be embraced etween the outer corners as shown at the left of Figure 1, or such nemers may be. secured to the rear faces of thestrips 18,;as11ustrated atithe right in Fi re 1, as preferred. Additional reinforcm in the form of rods or bars 20 may be instal ed, as also illustrated at the fright in Figure 1. These part,s includin the furring Strips and the reinforcing rok s 20 and metal 10, may all be enacted uponthe usual base or foundation work or lioor (not shown) `and fthe Lreinfozming@embedded thereimif de- .aired Other formsozfzmetal y material may ibensed in ,plaeezof tleefexpa d metal,

lune modification esnch mnterialbeingshcwn in Figure illustrating@ welded wiremesh material 10 which may be shapedinto the same general contour and :positioned :as il- :letmted in Figure landfnetained in this po- :sition means ofclips 17. In F ignre 5 I .illustmteplainrwire mesh network `10 em plo ed for the same purpose of reinforcing. i i the modified form ion'f'T Stnuctameshpwn .in ,Figure 4, the adjacent side web 'portions of the meinforcingmetalhare lbrought together cin contact andfsecured in this relation by g the corresponding corners v15 to ltheiimer facesof the uiringstrips 18. In 5 the Wimeirmesh reiznfoneing H0 as i bentfto foi-inthe f loop 22rfnr meinforciflgthe T,

:this loop being secnredby a staple 23er the .like to the rear faceted-the fnrring strip 18. -This view in Figure--rallsoillustrates analrtennutiivearrrany nticnthezadditionail'rods y f f used tor izufm'cingthe .T structure, the loop 22/exffndingfbetween'two pains of such rods, andrthe lreerlpaixryhocated liin iheslab end :spacedslxi htlyffarther `apart :than the other pair, and sospad and tied in thisrelation by means nfspacing .and bondelelnents 24-ehaving-the fciset spacer por- 25`ttng betweemthe reds20 :and Athe lugs 26 for embracing :said mds, as olellrly illustrated in Fi unef. Y

In the modifie :form ofconstrnctienshcwn in Figure .10, the .slab Mis rein-forced `bye continuous sheet of expanded metal LCL-and aseparste sectinn'of metalproyided with the .angle corners l12 yinibent into substantial Uselzape ffor reinforcingthe T 16, said .angle crneu'sbeing attached-to the strips 18 in the @me .manner as shown at the right in Fignreil. This U-shaped structure is bonded to the Slab reinforcing by a clip 17 or the like. l method of construction would enable athetobe east separately or independently of the'aslab and later bonded thereto, as might 1be desired under some conditions.

other modified forms efspacing vand bondingelements fer use in the T structure are shown in Figures 8 and 9. In Figure 8, the body portion 27 of the deviceis adapted to be inserted between the parallel webs of reinforcing material 10 in the T, with which it is adapted to be interlocked by bending the lugs or lingers 28 into en agement with the mesh of said material. ne end of the device is .formed with a flange .29 `provided with prongs 30 for convenience in attaching the device to the furring strip 18, and the other end ofethe device may be formed with an upturned flange 3l `adapted to be anchored in the cement or concrete; and intermediate its ends, the Vbody portion n of the device is punched with holes 32 having entering slots +32 for the .rods 20 and with -a larger hole .33 for the passage of the concrete material. 'Ilhe advantage of this form of spacing -tieis `in the greater area of support afforded concrete material for which it provides horizontal ledges at intervals along the T. AIn Figu 9 the device shown comprises a spacing rod or sleeve 35 adapted for insertion between ythe parallel webs of the reinforcing material and havinglthe bol-t extensions 36 and fnuts 37 for securing the device in fplacefby YIctainingengagement with said ma- The application of the cement and con- Fcrete material is intended Yto be carried 'out `substsantiially in thesame manner as setfforth in my so-pending application of even date herewith. After the erection of .the expanded ror wire metal reinforcingmaterial on the foundation er base structure, .and attachment of the -furring strips inthe relation shown, any additional reinforcing bars or rods ane put in place, yand `sheets of backing vmalsaine-l .210, such es insulation or other material, are inserted in the spaces between the troweling, or by impelling the material into a place, as by `a cement gun, through the metal reinforcing net Work to form the wall or slab 14 andthe Ts 16, yas well as any belts or sills or fpart-itionwork which may be formed in the same man-ner asset forth in said application. Any back plastering at the sides of the Ts whichmay bey necessary is of course `attended Vto during this operation, vand as soon as thefcement hasset and hardened, the backing material 40 may be removed unless this is to be left in place as insulation material. The slab, with its reinforcing, including the T projections (ribs and sills) is now complete and ready to function as the main structural supporting frame of the building, the only additional steps required for finishing the wall being the outer stucco or other finish coating which may be applied to the exterior face of the slab. The furring strips 18 are used as nailing grounds for the interior wall finish, and also for securing the insulation in place if preferred to bring the insulation forward some distance away from the slab.

From the foregoing it is apparent that I have devised a practical construction method for carrying out the desired purposes of the invention. It will readily be seen also that the method is equally well f adapted for the construction of a floor slab,

and that, in addition to eliminating the use of collapsible frame pieces, the invention as herein set forth possesses various other advantages and is adapted to effect similar economies to those characterizing the construction and method set forth in the copending application above referred to.

While I have illustrated and described what I now regard as the preferred form of construction for embodying the invention as well as the preferred method for practicing the same, I desire to reserve the right to make all changes and modifications which may fairly fall within the scope of the appended claims.

What I claim is: y

1. The method of constructing a concrete slab with an integral T which consists in forming a metal reinforcing network int-o shape for reinforcing both the slab and T, erecting a furring strip for forming the outer face of the T, and applying the cel ment and concrete material to the reinforcing at the side opposite from the T and impelling said material through said network, and then back plastering the surfaces of the T side of the structure.

2. An integral concrete slab and T having expanded metal reinforcing embedded in the slab and formed with bands of uncut metal bent to provide angle corners at the base of the T, said reinforcing comprising also web portions of expanded metal extending in parallel relation through the T, and a furring strip carried by the outer face of the T and secured to said web portions.

In witness whereof I hereunto affix my signature. v ERNEST O. BROSTROM. 

